Structural refinement of [Y<inf>1-x</inf>Ca<inf>x</inf>]SrBaCu<inf>2.80</inf> (PO<inf>4</inf>)<inf>0.20</inf>O<inf>y</inf>

J. C. Gonzalez Gonzalez, D. A. Landinez Tellez, J. Albino Aguiar, A. Bustamante Dominguez

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[Y1-xCax]SrBaCu2.80 (PO4)0.20Oy samples with 0.10≤x≤0.40 were synthesized using the solid state reaction technique. X-ray diffraction patterns show that all the compounds crystallized into a 123 tetragonal structure. The analyses of the structure with Rietveld refinement were made using a model that contain one Cu(2) in a four coordination and not in five coordination as the other 123 tetragonal structures. This fact permits that the Tc increases with Ca concentration. All samples are superconductors as reported previously. © 2001 Elsevier Science B.V.
Original languageAmerican English
Pages (from-to)375-378
Number of pages4
JournalPhysica C: Superconductivity and its Applications
StatePublished - 1 May 2001


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